China Leaps Ahead with Geospatial Research

GIM International Interviews Professor Dr ZHANG Jixian
Prof. Dr John van Genderen, himself a leading western expert on geospatial developments in China, interviews Professor Dr ZHANG Jixian, acting president of the Chinese Academy of Surveying and Mapping on the rapid evolution of geospatial ideas in China. Could you provide a brief overview of China’s earth observation missions, from their start up until now? China initiated a plan to develop a self-owned, proprietary (in terms of intellectual property rights) earth observation system after DFH-1, the first Chinese satellite, in 1970. Since then, many earth observation missions have been launched. As of today, we have developed five series of... (read more)
2005-03-24 12:00:00

Digital Aerial Cameras

New Developments
The growing need for geo-data everywhere is driving customers to demand shorter turnaround rates and higher levels of detail. These needs can be met by aerial imagery directly captured in digital format onboard an aircraft. In tandem with the new product survey on Digital Aerial Cameras (see our website), the author here gives an overview of new developments. In my overview published in GIM International April 2008, I categorised the various digital aerial cameras under linear- and area-array solutions: one of many possible groupings for these systems. Another, based on technological criteria, considers dimension (size, weight and number of pixels... (read more)
2011-03-28 04:13:34

Light Mobile Collection Tools for Land Administration

Proof of Concept from Colombia
Need for administration of property: estimated 75% of the relations between people and land not documented. There is an urgent need for the administration of property and land use rights worldwide as the basis for social and economic growth. Notwithstanding the enormous investments by governments and international organisations in the development of such systems over the past decades, it is still estimated that, from a global perspective, 75% of the relations between people and their land are not documented. So which methods and techniques can be used to develop land administration systems for all, and within our generation? Light mobile collection tools may offer a solution, as presented in this proof of concept from Colombia. By... (read more)
2015-11-16 10:44:07

Laser Scanner in a Backpack

The Evolution towards All-terrain Personal Laser Scanners
Evolution of Laser scanning: new prototype which can be held in a backpack for rugged terrain. Laser scanning systems have gone through a major evolution in the past decade. After the initial breakthrough of airborne laser scanners (ALS), other types of laser scanning systems have emerged, most notably terrestrial laser scanners (TLS) and mobile laser scanners (MLS). While these three main types of Lidar systems together serve a large number of applications, none of them are optimised for fast and flexible scanning in challenging locations, rugged terrain and complicated urban structures. Personal laser scanners (PLS) fill this void and are now evolving towards compact, agile and flexible solutions for mapping complex environments. This article explains the... (read more)
2016-02-15 10:57:34

ITC and UNU

Developments in Geomatics Education (8)
In 2005 ITC (International Institute for Geo-Information Science and Earth Observation) Enschede, the Netherlands, became an associated institution of the United Nations University (UNU) in a co-operation focused on disaster management and land administration. Described here are the role of UNU and the ITC contribution. For 32 years now the United Nations University (UNU) has been delivering research and capacity building to resolve global problems of concern to the United Nations (UN), its peoples and member states. UNU, an autonomous UN organ with as rector a UN under-secretary, fosters intellectual co-operation among scholars, scientists and practitioners, especially in the developing... (read more)
2007-07-07 12:00:00

Point Clouds (2)

Survey of Processing Software
Collecting and processing point clouds has been trending topic in the geospatial sector over the past few years. This article focuses on point cloud processing software aimed at creating DEMs or DSMs and products derived from these. The first article of this diptych, originally published in the June 2014 issue of GIM International, focused on functionalities. This survey starts with the software of Terrasolid, which is based in Helsinki, Finland. It will then focus on three systems listed on the Geo-matching.com website, subsequently continuing with software which operates independently from the particular sensors, to then arrive at proprietary systems. It... (read more)
2014-07-25 10:02:27

President of a Proud Organisation

GIM Interviews Dr Milan Konecny, President, International Cartographic Association (ICA)
Map users expect understandable, true and user-friendly output and visualisations of data fitted to application, and this is the job of the cartographer. The XXIII Congress of the International Cartographic Association (ICA) will be held in Moscow from 4th to 9th August 2007. Established in 1959 from origins in the International Geographical Union, ICA is soon to celebrate its fiftieth anniversary. Reason enough to interview ICA president Milan Konecny. Map users expect understandable, true and user-friendly output and visualisations of data fitted to application, and this is the job of the cartographer. The XXIII Congress of the International Cartographic Association... (read more)
2007-06-14 12:00:00

China Leaps Ahead with Geospatial Research

GIM International Interviews Professor Dr ZHANG Jixian
Prof. Dr John van Genderen, himself a leading western expert on geospatial developments in China, interviews Professor Dr ZHANG Jixian, acting president of the Chinese Academy of Surveying and Mapping on the rapid evolution of geospatial ideas in China. Could you provide a brief overview of China’s earth observation missions, from their start up until now? China initiated a plan to develop a self-owned, proprietary (in terms of intellectual property rights) earth observation system after DFH-1, the first Chinese satellite, in 1970. Since then, many earth observation missions have been launched. As of today, we have developed five series of... (read more)
2005-03-24 12:00:00

Leica Geosystems, HDS

Fifth User Conference and HQ, San Ramon, USA
Terrestrial laser scanning combines a high level of detail with surveying accuracy for the creation of 3D-models of virtually any object. The technology literally opens up new dimensions and so attracts widespread attention. It is in the interest of manufacturers to bring these people together for cross-fertilisation of ideas, so to drive the makers on towards problem solving and new survey solutions. Leica Geosystems HDS held the fifth such get-together in California from 22nd to 24th October 2007.<P> Arriving tired and tense after an intercontinental flight, the journey from San Francisco International Airport to San Ramon feels fraught. After a... (read more)
2008-01-11 12:00:00

Point Clouds and Smart Cities

The Need for 3D Geodata and Geomatics Specialists
The ‘smart city’ concept entirely relies on a permanent stream of massive amounts of data acquired by a great variety of sensors distributed throughout the city. Smart use of all this data requires integration with 3D city maps for which point clouds, acquired by laser scanning or photogrammetry, are the main sources. The author of this article identifies the abilities of point clouds to support the smart city concept. The benefits of point clouds for monitoring urban processes were recognised quite early on. Back in the early 1990s, airborne Lidar could accurately provide the height component which is so important... (read more)
2018-10-25 08:48:08
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